Frank, Patricia, author
Wiley, 2011
eBooks
Gribbin, John, author
Yale University Press, 1999
Buku Referensi
Cynthia Apsari, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
UI - Skripsi (Membership)
edited by Ronald P. Grelsamer and Suzanne Loebl
Macmilan , 1996
Buku Referensi
Senelick, Richard C.
Contemporary Books , 1994
Buku Teks